We then assessed the quality of the produced bounding boxes. In distancehist, we report
a histogram depicting the distribution of the distances of the pedestrians from the camera. We observed that human annotators tend not to annotate pedestrians far more than a certain amount from the camera in real-world datasets. We computed this distance limit by finding the minimum bounding box height, in pixels, occurring in human annotations of the MOT17Det [1]} dataset, and seeing at what distance from the camera we reached this bounding box limit size on the jta annotations. We concluded that human annotators did not include bounding boxes for pedestrians farther than 30–40 meters from the camera. Then, to be consistent with real-world datasets on which we will validate our approach, we cleaned the produced bounding boxes by pruning all the ones enclosing pedestrians farther than 40 meters.
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